Press-roll mechanism.



J. L. GRAHAM.

PRESS ROLL MECHANISM. APPLICATION FILED JUNE 1. 1908.

920,948, Patented May 11, 1909.

BSHEETS-SHEET 1.

1H: NORRIS PETERS co., WASHINGTON, n. c

J. L. GRAHAM;

PRESS ROLL MECHANISM. APPLIGATION FILED-JUNE 1,1908.

920,948, -WJ "PatentedMayl v 09.

a snms- T 2.

WITNESSES:

1 l INVENTOR ZJQXW ""Y-BYI J: L! I PRESS ROLL, MECHANISM. APPLICATION FILED JUNE 1 1908. O 929,94 Patented-May 11, 1909. v I 3 snzmwnnm s.

III III I mmumuuu i INVENTOR WlTNESSES: I

sists in certain novel features and combi UNITED s TAfrEs PATEN FFICE.

JOHN L. GRAHAM, OF REYNOLDSVILLE, PENNSYLVANIA, ASSIGNOR TO WICKES BROTHERS,

OF SAGINAW, MICHIGAN, A CORPORATION OF MICHIGAN.

PRESS-ROLL MECHANISM.

Specification of Letters Patent.

Patented May 11, 1909.

To all whom it may concern:

Be it known that I, JOHN L. GRAHAM, a citizen of the United States, residing'at Rey noldsville, in the county of Jefferson and -State of Pennsylvania, have invented certain new and useful Improvements in Press- Itoll Mechanisms; and I do'hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.-

My invention relates to press roll mechanisms for gangsaws. p

One object is the provision of means for disconnecting the press rolls and actuating cylinder and swinging the .press rolls away from the saws.

A further object is the provision of means whereby the piston rods for actuating the rolls are maintained out of the way of the operator when repairing the saws.

A further object is the provision of means for attaching the sash which supports the rolls to and releasing it from the piston rod with ease and desp'atch. I

Another object attained is the prevention of drip from the cylinders.-

A still further object is the arrangement of parts whereby the accidental admission of motive power to. the cylinders will result in no injury to the operator when making repairs.

Still another object is the location of the cylinders close to yet out of the way of the work, whereby the shorter piston rods can be employed.

Another object is the provision of a longer A further object is the arrangen'ient of I parts whereby the rod when doingits hardest work is working under intension rather than compression.

My invention avoids the disadvantages adherent in former constructlons and connations, such as will be more fully. described hereinafter and particularly pointed outin the claims. s

In the accompanying drawings,lFigure I is a front View of a gang saw equipped with my invention; Fig. 2 is a top plan view showing the swing gate; Fig. 3 is a side View; Fig. 4 is a'detail front view offa sash the ears (9)on the gate.

pintle (4).

and its connected parts; Fig. 5 is a detail side View of the free end of the piston rod; and Fig. 6 is a detail perspective view of the upper end of the steam cylinder.

(A) indicates the side frame of a gang, and (1) is the cornice connecting the upper ends of the side frames. A feed roll (2) is journaled in the side frames in front of the saws (not shown).

So far'as I am aware, it is new, first, to provide a vertically-placed cylinder, the upper head of which is provided with a stufling box and a piston rod projecting upward through the stuffing box, combined with a press roll and sash, the bail of the sash extendingupward and embracing the cylinder, theupper end of the bail being connected with the piston rod above the upper head of the cylinder, whereby dri from the stufling box is avoided. Second y, to provide in combination with the above construction, an automatic attachable and detachable connection between the piston rod and the bail. stationarily mounted on the gang saw frame in combination with a press roll and sash mounted in ya gate detachably connected to the frame, the bail of the sash extending up and embracing the cylinder, a piston rod projecting through the upper head of the cylinder, and an automatic attachable and detachable connection between the bail and Thirdly, to provide a cylinder the piston rod. Fourth to provide a press- One'such means is shown wherein the gate is hinged to the side frame (A) by means ;of a pintle l) passing through brackets (5) on the side frame and ears (6) on the gate. The opposite end of the gate may be reframe by means of the pins (7) (7) passing through brackets (8) on the side frame and By removing the pins (7 (7), the gate can be swung on the The gate is provided with vertically-extending bars (10) (10), the bar (10) being located preferably centrally of the machine. The bars (10) (10) are grooved on their inner side faces and the movably fastened to the remaining side sashes are of such length that a longer and l more rigid bearing is provided than heretofore which will resist lateral strains caused by the tendency of the roll (12) to follow the cant or timber. By providing such rigid bearings, said strain on the piston rod and stufling boX is avoided, which reduces theliability of leakage from the box and spring ing of the rods. l urthern'rore, the long bearing causes the guides to remain in aline ment with the piston rod.

Cylinders (13) (13) are suitably secured to the cornice of the gang and are provided. with piston rods (14-) (la) arranged in the same vertical plane with the guides (11) (1.] The piston rods project up through the stuffing boxes (14) located on the upper heads (15) of the cylinders.

The piston rods and sashes might be connected in any one of a number of different ways, but as one means I may provide the following construction. The piston rods are each provided with a transverse hook (16) having a lateral mouth, the lips of which are slightly divergent.

The bail (17) secured to each pair of 1 guides, extends upwardly and its sides slightly converge. The bailpasses upward on each side of the cylinder and the upper end of loop of the bail is received in the open hook (16) of the piston rod. The bail may be slightly reduced, as at (20), to admit of its reception in and withdrawal from the hook. It is necessary to support the rolls and sashes in the gate when. the latter is moved away from the gang. Heretofore this has been accomplished by providing a latch which must be operated to lock'the rolls in place before the gate is swung outward. In my invention, means is provided for automatically preventing the disengagement of the rolls and gate and as one such means I have shown the adjacent guides (11) (11) equipped with forwardly projecting stops (21) (21) adapted to engage the upper crosspiece (22) of the gate, to support the rolls when the gate is swung away from the frai ie. When it is desired to inspect or repair the saws all that is necessary in this form of my invention'is to let the rolls down to their lowest limit of movement at which point the stops (21) (21) engage the upper cross-piece (22) of the gate. The pins (7) (7) are then withdrawn and the gate swung outward on the pins (4). The bails are free to move laterally in or out of the hooks (16). A reverse operation locks the gate in operative position, the bails being received'in the hooks.

It will be seen that there is no opening through the lower head of the cylinder and. hence no dripping of hot water on the machine or on the operator.

The above described arrangement admits of locating the cylinders close to the work and yet out of the way of the repair man.

The long bail admits of using a piston rod of less length than heretofore and avoids any liability of s n'inging the rod.

The rod is in tension when holding the press rolls against the cant or timber instead of being subjected to the stress of compression as heretofore.

The upper heads (15) of the cylinders are pocketed to receive any drip which may be forced or leak out of the stuffing boxes (14") around the piston rods and the heat of the cylinders will ordinarily evaporate such drip. If, however, there is too great a leakage to be evaporated I may provide a drain such as a pipe (18) leading from the cupped head and discharging at any suitable point.

By projecting the piston rods through the upper end of the cylinders any accidental admission of steam to the cylinders when repairs are being made will not injure the operator. The cylinders may be empty of steam while repairs are being made. In a former construction it was necessary to maintain steam in the cylinders for the purpose of retaining the press rolls in raised position out of the way of the repair man and the hot drip from the stuffing boxes was unpleasant. The piston rods projected. through the bottom heads of the cylinders and repair men were injured by the accidental admission of steam to the cylinders such admission of steam driving the piston rods and rolls onto the neck of the operator.

Having thus fully disclosed my invention, what I claim as new is:

1. The combination with a frame, of a press roll mechanism comprising a gate detachably connected to the frame, a press roll sash slidingly mounted in the gate, a press roll carried by the sash, a cylinder mounted on the frame, a piston rod projecting through the upper head of the cylinder, and means on the piston rod adapted to auton'latically and releasably engage the press roll sash.

2. The combination with a frame, of a press roll mechanism comprising a gate detachably connected to the frame, guides slidingly received in the gate, a press roll journaled in the guides, a bail carried. by the guides, a cylinder mounted on the frame, the bail extending upward around the cylinder, a piston rod projecting through the upper head of the cylinder, and means carried by the piston rod for releasably receiving the bail.

3. The combination with a frame, of a press roll mechanism comprising a gate detachably connected to the frame, a press roll sash slidingly mounted therein, a press roll journaled in the sash, a stop projecting from the sash and engaging the gate, a cylinder mounted on the frame, a plston rod, and means carried by the rod adapted to releasably engage the sash;

4. The combination with aframe, of a cylinder mounted thereon, a stuffing box on the upper head of .the cylinder, a piston rod projecting upward through the stuffing box, a slidingly mounted sash, a press roll j ournaled therein, the bail of the sash. extending upward around the cylinder, the upper end of the bail being connected to the piston rod above the upper head of the cylinder.

5. The combination with a frame, of a cylinder mounted thereon, a stuffing box on the upper head of the cylinder, a piston rod projecting upward through the stufiing box, a slidingly-mounted sash, a press roll journaled therein, the bail of the sash extending upward around the cylinder, and an automatic attachableiand detachable connection between the upper end of the bail and the piston rod. v r

6. The combination with a frame, of a press roll mechanism comprising a gate movable relative to the frame, a press roll sash i11- cluding a bail slidingly mounted in the gate, a press roll carried by the sash, a cylinder mounted on the frame, a piston rod projecting through the upper head of the cylinder,

the bail of the sash extending up and em bracing the cylinder, and an automatic attachable and detachable connection between the bail and piston rod.

7. The combination with a gang saw frame, of a gate detachably connected to the frame, guides slidingly mounted in the gate, a press roll journaled in the guides, a cylinder on the gang sawframe, a piston rod projecting through the upper head of the cylinder, a hook on the piston rod, and a bail carried by the guides and releasably received in the hook.

8. The combination with a frame, of a press roll mechanism comprising a gate detachably connected to the frame, a cylinder supported independently of the gate, a piston rod projcctlng from the u per end of the cylinder, a press roll sash sli ingly mounted in the gate, means for releasably connecting the press roll sash and piston rod to permit the sash to move with the gate, and means for preventing the disengagement of the press roll sash and gate.

9. A press roll 'mechanism comprising a swinging gate, a press roll sash slidingly mounted in the gate, a cylinder supported independently of the gate, and a piston rod proj ecting through one head of the cylinder and releasably engaged by the press roll sash.

In testimony whereof, I affix my signature in presence of two witnesses.

JOHN L. GRAHAM.

Witnesses:

RALPH S. WARFIELD,

J. RAY ABBEY. 

